Ummmmm...wait.....what?

So long story short-ish...

May 6th found out I was pregnant, May 25th was told that I was having an incomplete miscarriage (I was 8-9weeks pregnant), the miscarriage happened and I bled from June 6-10th with all bleeding / spotting all of it done by the 12th. Fast forward to last week, both Glow and another ap I use said my period should of came but nothing, took a test it came up negative and I went about life with the thought of "maybe I took it early" in the back of my head. Well according to both aps I'm a week late, but started having some barely there when I wipe dark brown discharge.......wtf is going on body??

Is this just normal before Aunt Flow shows up discharge (I've had that happen a few times)? Is this the implementation bleeding I hear so much about on this ap? Am I just nuts (seems like a possibility lol)?...any other ladies have this happen to them, I'd like to hear your experience if you don't mind sharing.